1. the Netherlands Institute of Health Sciences, Erasmus MC University Medical Center, Rotterdam2Department of Public Health, Erasmus MC University Medical Center, Rotterdam, the Netherlands
2. Department of Family Medicine and Community Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia4Department of Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia5The Leonard Davis Center for Health
3. Department of Public Health, Erasmus MC University Medical Center, Rotterdam, the Netherlands
4. Kaiser Permanente Division of Research, Oakland, California
5. Research and Evaluation, Kaiser Permanente Southern California, Pasadena
6. Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York